The document discusses several theories that attempt to explain disparities in development levels between countries:
- Resource endowment theory suggests development depends on a country's natural and human resources. European development was aided by coal, iron, fertile land, and climate.
- Rostow's model proposes countries progress through the same linear stages of growth, but some fail to "take off" industrially.
- Dependency theory argues 500 years of European colonial exploitation of resources in Africa, Asia, and the Americas led to continued domination of rich over poor nations.